123148211 has 4 divisors (see below), whose sum is σ = 124986312. Its totient is φ = 121310112.

The previous prime is 123148199. The next prime is 123148243. The reversal of 123148211 is 112841321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123148211 - 2¹⁰ = 123147187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123148261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918950 + ... + 919083.

It is an arithmetic number, because the mean of its divisors is an integer number (31246578).

Almost surely, 2^123148211 is an apocalyptic number.

123148211 is a deficient number, since it is larger than the sum of its proper divisors (1838101).

123148211 is an equidigital number, since it uses as much as digits as its factorization.

123148211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838100.

The product of its digits is 384, while the sum is 23.

The square root of 123148211 is about 11097.2163626740. The cubic root of 123148211 is about 497.5186542167.

Adding to 123148211 its reverse (112841321), we get a palindrome (235989532).

The spelling of 123148211 in words is "one hundred twenty-three million, one hundred forty-eight thousand, two hundred eleven".